SpringBoot根据Word模板导出复杂格式的文档

<!-- poi-tl 核心依赖 -->
<dependency>
    <groupId>com.deepoove</groupId>
    <artifactId>poi-tl</artifactId>
    <version>1.12.2</version>
</dependency>
<!-- 图表生成依赖 -->
<dependency>
    <groupId>org.jfree</groupId>
    <artifactId>jfreechart</artifactId>
    <version>1.5.4</version>
</dependency>

// 配置渲染策略（合并单元格、循环渲染）
Configure config = Configure.builder()
    .useSpringEL()
    .bind("list1", new LoopRowTableRenderPolicy())  // 行循环
    .bind("tableList", new ReportDataPolicy())      // 自定义合并策略
    .build();

// 加载模板并渲染数据
XWPFTemplate template = XWPFTemplate.compile("template.docx", config)
    .render(dataMap);

// 输出到响应流（支持下载）
template.write(response.getOutputStream());

public class ReportDataPolicy extends DynamicTableRenderPolicy {
    @Override
    public void render(XWPFTable table, Object data) {
        // 解析数据并动态插入行
        List<BsReportData> list = JSON.parseArray(JSON.toJSONString(data), BsReportData.class);
        for (BsReportData item : list) {
            RowRenderData row = Rows.of(item.getField1(), item.getField2()).create();
            table.insertNewTableRow().render(row);
        }
    }
}

XWPFDocument document = new XWPFDocument();
XWPFTable table = document.createTable(3, 3); // 3行3列
table.getRow(0).getCell(0).setText("标题");
// 动态填充数据
for (int i=0; i<dataList.size(); i++) {
    table.getRow(i+1).getCell(0).setText(dataList.get(i).getName());
}

// 生成柱状图
JFreeChart chart = ChartFactory.createBarChart(...);
// 转换为 BufferedImage
BufferedImage image = chart.createBufferedImage(400, 300);
// 插入 Word
XWPFParagraph paragraph = document.createParagraph();
XWPFRun run = paragraph.createRun();
run.addPicture(new ByteArrayInputStream(toByteArray(image)), XWPFDocument.PICTURE_TYPE_PNG, "chart.png", Units.toEMU(400), Units.toEMU(300));